s) In a study, it was estimated that the average annual expenditure on take-out was Php 75000 for Filipinos age 25 and above. Suppose this estimate is based on a sample of 65 respondents and that the sample standard deviation is Php 20,000. a. At 95% confidence, what is the standard error and margin of error? b. What is the 95% confidence interval for the population mean amount spent on take-aways?

Q: Assume the given confidence interval for the population mean height of Sequoia trees in Sequoia…

A: The confidence interval is (73.5, 78.7).

Q: An advertising executive wants to estimate the mean weekly amount of time consumers spend watching…

A: Margin of error is the error due to random sampling. The margin of error decreases with an increase…

Q: a) In the analysis of a barrel of powder, the standard deviation of the sampling operation is ±4%…

A: a) The standard deviation of the sampling operation is ± 4% or ± 0.04 and the standard deviation of…

Q: Among various ethnic groups, the standard deviation of heights is known to be approximately three…

A:

Q: Suppose you wish to estimate the average height of adults using a sample of 20 adults where the mean…

A:

Q: The bookstore at IRSC would like to estimate the proportion of students who prefer electronic…

A: For the given data Find 96% Confidence interval

Q: If specifications for a research project require the standard error of the corresponding…

A: From the provided information, Standard error (SE) = 5 Population standard deviation (σ) = 45

Q: For the Reese's pieces scenario, compute the standard deviation of sample taking if the size of the…

A:

Q: Suppose the nation average for the math portion of the College Board  SAT  is 515. The College Board…

A: Given data: Mean = 515 Standard deviation  = 100

Q: Given that the 95% confidence interval estimate of the proportion of water specimens that contain…

A: Given  95% CI for population proportion (p) (0.529,0.627)

Q: Determine the sample size needed to construct a 95% confidence interval for the population mean, μ,…

A:

Q: The number of Grade 11 learners per section in Kasiglahan Village Senior High School has a mean of…

A: The population mean is 56.3. The population standard deviation is 8.6. We have to write which…

Q: A company had 15 employees whose salaries are shown below. Find the standard deviation $7,500…

A: Salaries(x) of given 15 employees, so n=15 x x2 7500 56250000 15500 240250000 26400…

Q: a. How many 18 to 29 year olds must be sampled to find at least 50 who invest in the stock market?…

A: Part a: For 18-29 years old the percent of individuals involved in stock market is 31%. Thus, X…

Q: Construct the indicated confidence interval for the population mean . Assume c = 0.98, = 101.3, =…

A:

Q: (a) How many reams should the manager expect to use each day? (b) What is the standard deviation of…

A: here given Discrete probability Distribution of X  X=  no of reams of paper Used

Q: c. What is the margin of error for a 90% confidence interval estimate for the difference between the…

A: Given data: First round Final round 71 75 69 68 69 66 73 76 69 72 69 75 72 72 69…

Q: With a mean of 40, and SEM = 5, what values would encompass 99% of scores (assume sigma is known)?

A: Introduction: Let x be the continuous random variable and it said to be follows normal distribution…

Q: 7. The City Transport and Traffic Management Office (CTTMO) study of 8000 vehicles that passed the…

A: Given: The City Transport and Traffic Management Office (CTTMO) study of 8000 vehicles that passed…

Q: Assume the given confidence interval for the population mean height of Sequoia trees in Sequoia…

A: Given: Lower limit = 56.1 Upper limit =63.4 The Sample mean can be calculated as: Sample mean =…

Q: 1. The average height of the students in a famous college in the city is unknown but the standard…

A: 1. The population standard deviation is 0.8, sample size is 49, and sample mean is 6.1. Computation…

Q: If the population standard deviation is σ=10, how large a sample is necessary to have a standard…

A: σ=10   The standard error is given by SE = σn n = (σSE)2

Q: m the distributor. On average, how many of these tires Would Ahmed expect to be blemished? O 12 O 40…

A: Given: n=25,x=12.7,σ=2.1,α=0.05

Q: A random sample of 8 adults aged 30years,were asked how much they spent of medication costsin the…

A: Given: Data in ascending order: 140,300,470,520,640,700,1200,5600 Sample Mean can be calculated as:…

Q: A company wants to estimate the mean time (in hours) per week for an adult who uses computers at…

A:

Q: In determining the required sample size in an application involving an estimate for the population…

A: Given: On determining the required sample size in an application involving an estimate for the…

Q: for a sample of 150 that has a mean of 6540 and a standard deviation of .89, calculate the 95%…

A: It is given that mean and standard deviation are 6,540 and 0.89, respectively.

Q: (b) Use a 99% confidence interval to estimate the mean percent change in the population. FILE O…

A: (b) The mean percent is, x¯=∑xn=-4.7-2.5-4.9-2.7+⋯-5.147=-168.647=-3.5872 The mean percent is…

Q: A travel agency wishes to estimate, at 99% confidence and to within $100, the mean airfare for…

A: According to the given information, we have Standard deviation = $275 Margin of error = $100…

Q: 1) In an effort to estimate the mean amount spent per customer at Oliver's Eatery in Astoria,…

A: As per the honor code, We’ll answer the first question since the exact one wasn’t specified. Please…

Q: According to NEA Advocate (2007), the averages for the 2005-2006 academic year, 34 CSU Stanislaus…

A: The provided information is x¯1=$65800x¯2=$72400σ1=$12000σ2=$8000n1=34n2=40α=0.05 The critical value…

Q: If the mean flying time for a sample of 65 pilots was 15.6 hours per month, and the population…

A:

Q: Using the information provided below, calculate the confidence intervals for both Student B Mean:…

A:

Q: Suppose that you wanted to estimate the population mean amount spent eating out per week by…

A: The question is about sample size estimation Given: Sample std. deviation = 200 dollars Margin of…

Q: for a sample of 57 that has a mean of 6200 and a standard deviation of 254, calculate the 95%…

A:

Q: Assume that a sample is used to estimate a population mean µ. Find the margin of error M.E, that…

A:

Q: An advertising executive wants to estimate the mean weekly amount of time consumers spend watching…

A:

Q: The following data was collected during the Framingham Heart Study. Is there a statistically…

A: The sample size is sufficiently large. So, can use the standard normal distribution.

Q: The manager of a certain TV station claimed that the average rating of people watching their…

A: We have given that  Hypothesized population mean = 60.5  sample size  =35 Standard deviation =13.5…

Q: If a confidence interval for the mean is (41≤μ≤84)(41≤μ≤84), a) What is the point estimate?    b)…

A: a) What is the point estimate?

Q: Suppose we want to test whether or not the average SAT score at the University of Seychelles is…

A: From provided information, It is claimed that the average SAT score at the University of Seychelles…

Q: If a confidence interval for the mean is (43≤μ≤82)(43≤μ≤82), a) What is the point estimate?    b)…

A: Given the confidence interval for the population mean in tri-linear inequality form: Hence,

Q: , The following salaries (in pesos) were obtained from a sample of 12 executive secretaries: 7,500…

A: Given: n = 12 Data : 7500, 8400, 13000, 5800, 10300, 6300, 10600, 9200, 7600, 7500, 8350, 9466

Q: The emounts of money requested on home loan applications at Down River Federal Savings follow the…

A: It is given that mean is 79,000 and standard deviation is 16,000.

Q: ence interval for a population mean, compute the margin of error, E. 11.00<μ<13.1411.00<μ<13.14

A: Given the confidence interval 11.00&lt;μ&lt;13.14 Computing the Margin of error is given as below:

Q: For a group of 10 men subjected to a stress situation, the mean number of heart beats per minute was…

A:

Q: Compute the standard deviation of the sampled proportions if p=.8 and n=50. Round to three places.

A: Given,n=50p=0.8

Q: For a group of 20 students taking a PSDTF test, the mean heart rate was 96 beats per minute, and the…

A: Solution: Let X be the heart rate. From the given information, x-bar is 96 beats per minute, S=5 and…

Q: Assuming that the heights of college women are normally distributed with mean 65 inches and standard…

A:

Q: 16. Determine the mean number of books sold in an hour at that local book store. 17. Find the…

A:

Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.